Add handling of NTPv5 to the server #3281

Job	Run time
Build+test-musl (stable, x86_64-unknown-linux-musl, ubuntu-latest)	2m 10s
Build+test-musl (stable, x86_64-unknown-linux-musl, ubuntu-latest, --features ntpv5)	1m 55s
Build+test macos (macos-latest, stable)	2m 43s
Build+test ubuntu (ubuntu-latest, stable)	2m 28s
Build+test macos (macos-latest, stable, --features ntpv5)	1m 45s
Clippy	1m 29s
Format	11s
Precompiled man pages	8s
Build+test ubuntu (ubuntu-latest, stable, --features ntpv5)	2m 39s
test on freebsd	9m 49s
Build+test ubuntu (ubuntu-latest, beta)	3m 28s
Unused dependencies	1m 40s
Build+test ubuntu (ubuntu-latest, beta, --features ntpv5)	2m 39s
Validate configs	1m 2s
Build+test ubuntu (ubuntu-latest, 1.66.0)	7m 44s
audit-dependencies	34s
Build+test ubuntu (ubuntu-latest, 1.66.0, --features ntpv5)	7m 24s
ClippyMacOS	1m 35s
ClippyMusl	1m 38s
ClippyRaspberryPi	1m 34s
Smoke-test fuzzing targets	5m 6s
Smoke-test fuzzing targets (--features ntpv5)	2m 41s
	1h 2m 22s

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